AITA for walking away from helping my SIL after she lost her phone?

So my SIL (F24) has been having a rough time lately. Her and husb have been fighting a lot, she lost her job, and she lost her phone. She called me up this morning asking if she could stay with me for a few days because she has no way of getting in contact with anyone. I said yes, no problem, let me get the guest room ready.<br><br>Then she drops off her dad(50sM) and little brother(10Cs) as well saying they need to get out of the house and it’s only temporary. I love my dad but I need a break from him. He’s kind of a jerk and doesn’t really understand personal boundaries. As for my brother by marriage I really like him, but I don’t want to leave my home dirty because my parents are reluctant to clean. I asked SIL about watching her kids and she said no way, I’m going to work from home and take care of them while my dad takes care of my dog.<br><br>When they get here I ask if they could help me clean before they just leave all of their stuff sitting in my house. She tells me to shut up and I say no I’m gonna go work out to get away from her. So I go work out for an hour and a half and when I come back everything is clean and they’re gone. When I got back I noticed my spare house key was missing. <br><br>My mom says I’m an asshole for walking away and that I should’ve dealt with it like an adult. My dad agrees with me and says I did the right thing. I want to know if I was an asshole for leaving or if I handled it the right way.